Remove unnecessary period in uploading-a-project-to-github.md

[nguyenalex836]

Code of Conduct

• [X] I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/en/get-started/start-your-journey/uploading-a-project-to-github#step-1-create-a-new-repository-for-your-project

What part(s) of the article would you like to see updated?

In the "Description" box, type a short description..

Remove unnecessary period at the end of this sentence

Additional information

No response